Catalog Searcher
Categories

Single-point automatic lubricator

A single-point automatic lubricator is mounted directly on, or via a short pipe to, one lubrication point such as a bearing. It feeds grease or oil from a cartridge in small amounts over a set period. Drive methods include gas-driven types, which generate gas internally to push a piston, and electromechanical types, which use a motor to move the piston. Gas-driven units need no power supply and have a simple structure, but their discharge rate tends to be affected by ambient temperature. Electromechanical units are less sensitive to temperature, and some can be powered externally or linked to a PLC so that lubrication occurs only while the machine is running. They are used on motors, fans, pumps, and conveyor bearings in high, confined, or hazardous locations where manual greasing is difficult, to prevent missed or excessive lubrication.

How to choose Single-point automatic lubricator

  1. 1. Select capacity and period to match discharge requirements

    Match the required daily lubricant quantity to a combination of lubricant capacity (60 to 250 ml in listed models) and discharge period (1 to 24 months). The actual lubricant quantity is the capacity divided by the period, so calculate backward from the bearing's requirement and align the replacement interval with the maintenance plan to simplify management.

  2. 2. Check the available range of discharge periods

    Gas-driven models can be set from 1 to 12 months, and some electromechanical models can be set up to 24 months. Confirm whether the setting is dial-type and tool-free, and whether it can be changed or stopped midway, to ensure it can accommodate seasonal or operating condition changes.

  3. 3. Choose the drive method based on environment and control

    Gas-driven types are suitable where power cannot be supplied or in hazardous areas, and some are ATEX certified. Electromechanical or wired types are better where temperature changes are large, where lubrication is needed only while the machine is running, or where PLC monitoring is required.

  4. 4. Confirm discharge pressure is sufficient for pipe length

    The maximum operating pressure of listed models is 5 to 30 bar. When lubricating from a distant position through piping, pressure loss increases, so a higher-pressure model is required. The maximum supply length varies greatly by product, up to 300 m for grease and up to 5 m for oil, so always verify it against the specifications.

  5. 5. Match the thread standard of the lubrication point

    Check that the connection thread matches the standard of the lubrication point (grease nipple mounting hole). If it does not match, an adapter is required, and a longer mounting assembly can cause loosening or breakage due to vibration, so verify the mounting space as well.

  6. 6. Verify ambient temperature range and lubricant compatibility

    Confirm that the ambient temperature range covers the minimum and maximum temperatures at the installation site. Also confirm that the filled lubricant type suits the bearing conditions and, for food machinery, that it is NSF H1 food grade. For outdoor or washdown environments, also check the protection rating (IP code).

This guide was written by AI based on the listed products' documents and specification items. Check each manufacturer's documents before adopting.